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Teach Benchmark to read positions from a file

This comes handy to test the engine on different
sets of positions, not only the 15 default ones.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
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1 parent f1e2458 commit 925f97f4e761136c8a845d98f55303137fade589 @mcostalba committed Sep 18, 2008
Showing with 38 additions and 13 deletions.
  1. +38 −13 src/benchmark.cpp
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@@ -20,7 +20,9 @@
////
//// Includes
////
+#include <fstream>
#include <sstream>
+#include <vector>
#include "benchmark.h"
#include "search.h"
@@ -55,19 +57,20 @@ const std::string BenchmarkPositions[15] = {
//// Functions
////
-/// benchmark() runs a simple benchmark by letting Glaurung analyze 15
-/// positions for 60 seconds each. There are two parameters; the
-/// transposition table size and the number of search threads that should
-/// be used. The analysis is written to a file named bench.txt.
+/// benchmark() runs a simple benchmark by letting Glaurung analyze a set
+/// of positions for a given time each. There are four parameters; the
+/// transposition table size, the number of search threads that should
+/// be used, the time in seconds spent for each position (optional, default
+/// is 60) and an optional file name where to look for positions in fen
+/// format (default are the BenchmarkPositions defined above).
+/// The analysis is written to a file named bench.txt.
void benchmark(const std::string& commandLine) {
- Position pos;
- Move moves[1] = {MOVE_NONE};
- std::string ttSize, threads, fileName;
std::istringstream csVal(commandLine);
std::istringstream csStr(commandLine);
- int val, time;
+ std::string ttSize, threads, fileName;
+ int val, secsPerPos;
csStr >> ttSize;
csVal >> val;
@@ -90,15 +93,37 @@ void benchmark(const std::string& commandLine) {
set_option_value("Use Search Log", "true");
set_option_value("Search Log Filename", "bench.txt");
- csVal >> time; // In seconds
+ csVal >> secsPerPos;
csVal >> fileName;
+
+ std::vector<std::string> positions;
if (fileName != "default")
- exit(0);
+ {
+ std::ifstream fenFile(fileName.c_str());
+ if (!fenFile.is_open())
+ {
+ std::cerr << "Unable to open positions file " << fileName
+ << std::endl;
+ exit(EXIT_FAILURE);
+ }
+ std::string pos;
+ while (fenFile.good())
+ {
+ std::getline(fenFile, pos);
+ if (!pos.empty())
+ positions.push_back(pos);
+ }
+ fenFile.close();
+ } else
+ for (int i = 0; i < 15; i++)
+ positions.push_back(std::string(BenchmarkPositions[i]));
- for (int i = 0; i < 15; i++)
+ std::vector<std::string>::iterator it;
+ for (it = positions.begin(); it != positions.end(); ++it)
{
- pos.from_fen(BenchmarkPositions[i]);
- think(pos, true, false, 0, 0, 0, 0, 0, time * 1000, moves);
+ Move moves[1] = {MOVE_NONE};
+ Position pos(*it);
+ think(pos, true, false, 0, 0, 0, 0, 0, secsPerPos * 1000, moves);
}
}

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